Metal-bending machine



- Dec.v 7 1926.

, 1,610,201 J. J. CAVAGNARO METAL BENDING MACHI NE 2 sheets-sheet 1 Filed Sept. 5, 1923 INVENTOR.

J. J. cAvAGNARo METAL BENDINQ MACHINE 5. 1923 2 Sheets-Sheet 2 Filed Sep-t.

IN VEN TOR.

ATToRNE.

y 'Patented nec.v 7, 19526.

-CJI

` VJoni: JAMnsoAvnenAno, or'sANirnaNoIsco, catwoman. if" Y 1Mnrnnfinnmnennoninn.

application meafsttember 5,1923. jseria'i in). 661,169.

This invention relates to metal bending machines and has relation more particularly to a device 'of this'generalcharacter especially .designedl and adapted for 'use in bendingA metalfbars and itis an objectfof' the invention to provide a novel and improved device ofthisv general Vcharacter whereby a -bar maybe readily VbendedY at `aplurality of points therealongjat a singlepperation and alsofwhereby the 'bar may be'bendedat right angles'or readily'formed with ,a hook of desired radius." f y 'Ther' invention :consists in :the details of construction and :in the vcombination and "arrangement of the several parts of myy im- Y `proved j' metalL bending I ,machine whereby certain important advantages are; attained and the device rendered'simplen less ejrpen@ y tional view taken substantially Von the line an i assembly .v 'ing for making a hook bend. l y r j As disclosed in the accompanyingdr'aw- Y. ingsfldenotes 'a table of desired dimensionssive andV otherwise morel convenient and.

Y advantageous [for use, as will` be khereinafter companying drawings, wherein A Figure l is aiview in top plan illustrating a machine constructed in accordance with an embodiment of myfinvention; 'l

'Fig. 2is la enlarged sectional view taken Y substantially on vthefline'Q--Q of -1';

F ig. 3 is an enlarged fragmentary view in lside elevation of thestructure asuillus- "trated' in Figfl;

Fig. i is any enlargedv fragmentary sec- 5 is a k.view 1n top'plan illustrating an assembly for .bending abar;

Fig. 6 is a viewsimilar to Fig. 5 showing for making a right'angle bend;

' Fig.4 7 is'a view in perspective of a busha-nd which has its f central portion provided with "a circular opening l2.- The table l` is 'supported at ay desired elevation b y thesnpj portingl structure S vwhich structure at oppov site sides'of'the tableprovidingthe depending flanges. v

Each of the flanges 3iV ateachside ofrits .longitudinalcenter is' provided ywith 'a series lof circular 'openings 4, ladjacent openings being inl relatively close'rproximity one to theother: 'f

`V Snugly fitting Within the opening' 2 isil aY revolving'ta'ble 5 providedat itsaxial center G 'engages within "the upper portion Ifof a 6o? withagdependingtrunnion 6. The trnnnion 'tiibula'rpost 7 "wherebyjfthetable 5'issup-V ported 'for rotationjaboutfa fixed axis' lUnderlying the',marginal portion-of thel table `5 is the horiz'ontallyl disposed [annular ',trackway 8"suppo'rted by f thef-col'umns 9.

trackwaylO :securedl to theunder surface 'ofthe table 5, and ,interposedbetweenf1 the Vtraclrways', 8 and' l() r rare vthe anti-friction` members llherein' disclosed 4asfrollers. i By this means `the'onter.orinarginal` ortin of th? ,table v'5' iS 'eits@,tive/.1yv Support@ entrer-1 mittmg the 'table A5 tohavel desired rotation withl a vminimum of -frictional resistance." 'f

' 'lheftrackwayS also underliesan annulai- 1V i Also'seouredtothe'uiider face'of the-*table 'I 5and positioned outwardlyfof the tra'ckway "10 is an annular "rack 'i12 with which meshes *aygear 14. The gear llfislixed toy a shaft snitabl'y supported the posts'l andl?, Y 'and angadjacent end"flan;-;el 3.. Thev shaft extendsvbeyond the. tablepl andk operativelyengaged with'jsaid extended .portion "is a forward drive 'pull'eyflS, a'loose' pulley 19 and al reverse pulley 20, each of 4 which "being fadapted toc be@selectivelyr engagedin "any-desired mannerfwith vay'suitable source of power'. 'Ihroughfthe'V instrumentality of f Y.

'these' Vpulleys v18 to.l 2O table 5 may be caused t'oVrotat'eine'ither direction preferred.L ,l

The trunnion6:hereinbefore*referredfto is 'carriedfbyja plate 2l which is'bolted or votherivise securedfto the table las indicated Vat VE22., The 'table 5 katfits .axial center has g disposed :therethrough an'opening 23 and' radiating from'v saidv central opening 23 are,

the series 2430i:V openings, eachiseries Qabeing angles to the adjacent series. s Y, V My-improved inachineas hereing disclosed herein"disclosed as Substantially it-right metallic" bars for concrete a reinforcement although jldo lnotl wish tofbe 'underst'oo.d as limiting myself 'in`v this respect.

.Asillustrated,'in'fFig. 1v of theV drawings;k

is particularly designed for the bending of the machine is employedto bendjthefbarfB at aipluralityjofjpoints'at a single'oper'aticn andwhen sojemployedthe pins-r 2 5far'e 'selectively `ei'iga'ged within thev openingsgof :aligned seriesfQL i 1:. The depth ofl the bends'are under 'contri'.l'y

`vided at each end with a dependingv wing l28 which overlies`y an adjacent end. flange 3 and a pin 29 whichA is disposedthrough said wing 28: and a desired opening` 4 whereby the beams 26 are effectively lockedfin` desired adjusted position. Y

ySecured to the central. portion of the ange 27 of each of the beams 26 is. an angle bar 30. herein disclosed as disposedat right angles to the beams 26. andv the. bottom flange. of the member 30 isV provided withA a series of openings 31 disposed longitudinally-thereof through which is adapted to be*V selectivelyengaged a pin 32- whichalso engagesvthe table l. This member 30 prevents `bendingrorflexing of the beams 26 during'a bending `operation whereby the efficiency of the machine is'materially facilitated.

The assembly illustrated in F ig. 5 is one whereby. a rod is'adapted to be bended to provide a hook and when so employed'apin l33 is engaged within the central opening 23 'of the table 5 and with'which pin is engaged a bushing 34 of desired radius. lThe pink 33 andy bushing 34Vare provided with theinterlocking. tongues. and grooves asindicated at. 35 whereby the bushing isfixed to the: p in 33. yA beam. 26 is properly adjustedf with respect tothe applied bushing 34 and` a pin 25 positioned as required as is illustrated inn-F ig. 5 so that upon requi- .site turningrof. the table 5 the desired bending ofthe bar B will be effected. VBy having the bushing 34'fiXed to the pin 33,

the-.bushing 34. will rotate Ywith the table 5V vso that the bendingof the bar B will be'by rolling action and not by drawing or other- Vwise distortingthe body of thebar B.

The assembly',illustrated'. in Fig. 6. isV primarilyffor the purpose of effecting a right angular bend in the bar BL and in which assembly a pin 25 is engaged within the central opening 23 and a second pin 25 selectively engaged within an opening in one of the desired series 24 vso that uponV requisite turning of the Vtable the; desired bending action will be eected.

From the. foregoing description it is thoughtto be obvious. that a metal bending machine constructed in accordance with my invention is particularly wellY adapted for use. by reason of the convenience and. facili- `ty with which it may be. assembledV and operated,.and itwillalso be obvious that my invention is susceptible of some change'and modiflcatioirwithout departing from the principles and'spirit thereof and for ythisv vreason I do not wish 'to be understood as limiting myself to the precise arrangement and= formation of the several parts herein shown in carrying outl my invention in practice except .as hereinafter claimed.

I claim: i Y

11. A metal bending machiney comprising a table having the.` intermediate portion. cut out, a rotatable tablev positioned within.V the cut. out portion Vof'. the Vfirst namedV table., said rotatable tablev being provided witha central opening and with aseries of openings radiatinggfrom the-central opening, one

or morepins. selectively engagedwith the y openings of the rotatable. table, anda beam Y supportedby the first "named table andeX Vtending.across. thel rotatable. table.

2. A'metal bending machine. comprising a table: having the intermediate portion cut out, a rotatable table positioned within the cut out portion' of the Vfirst named table, said rotatable-table.beingprovided with a central. opening and with a. seriesof openings radiating .from the central opening,

one or more pins.. selectively engaged with the openings 0f the .rotatable table, a` bea-m. supported by the first named tableand extending acrossthe rotatableA table, and means for adjusting: the beam-withrespect to the center .of the rotatable4 table.

3. VA meta-l bending machine comprising a table' having the. intermediate portion cut out, a rotatable table positioned within the cut rout portion. of the. first namedfvtable, said rotatable. table being provided with a central openino-y andwith a series of'V openingsradiating from the central opening, one or more pins selectively engagedwith the openings of the rotatabletable, abeam supported by thev first named tableV and extending across the rotatable table, means for ad-` justing; the beam with respect to the'center of the rotatable table, and means coacting with the beam and the first named table for bracing the intermediatev portion of"` the beam. v Y l 4. Acmetalbending machine comprising a table havingnthe intermediate *portionV cut out, a rotatable table positioned withinthe cut out portion of the first named table, said rotatable tablebeing provided withy a central opening and with aseries of openings. radiating from the central opening, onefor more pinsselectively engaged with the openin s of therotatable table, Va beam supported y the first named table and extendingy across vthe rotatable table, and means. for moving the rotatable table in either direction.l Y Y 5..A A.metal bending machine. comprising 'a table having: the inter-mediateV portion cutV out, a rotatable vtable positioned within the but out portion of the rst named fable,k said rotatable tablebeingprovicled With a central opening and with a seriesl of opens signature, Y

tending'V aoross the vrotatable table;y said.

means being positioned at opposite sides of the'axial center of the rotatable table. 1U

Intestilnony whereof YI hereunto aflxvm'y i JOHN vJAMES GAVAGNARO. 

